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Finding the Fourth Proportional to 117,234.03, 161,775.30 and 74,788

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Solution

The fourth proportional to 117,234.03, 161,775.30 and 74,788 is: 103,202.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,234.03 : 161,775.30 = 74,788 : x
  2. Step 2: Convert to fraction form
    117,234.03/161,775.30 = 74,788/x
  3. Step 3: Cross multiply
    117,234.03x = 161,775.30 × 74,788
  4. Step 4: Simplify right side
    117,234.03x = 12,098,851,136.40
  5. Step 5: Solve for x
    x = 12,098,851,136.40/117,234.03
  6. Step 6: Final answer
    x = 103,202.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.